ARCA. 241 



are white, and marked obliquely with, reddish bands. Both 

 Chemnitz and Brugniere have quoted the above-mentioned 

 figures of Bonanni's for this species, and from these the 

 Venus pelhtcida of Gmelin has been constituted. 



undata. 35. Shell sub-orbicular, nearly smooth, 

 with obsolete reticulated striae ; cartilage 

 cleft lanceolate ; margin crenated. 



Area undata. Linnceus Syst. Nat. p. 1 1 42. Chemnitz, 

 vii. p. 224. t. 57- f. 560. Schroeter Eint. iii. p. 271. 

 Gmelin, p. 3312. Bruguiere Enc. Meth. p. 224. 

 Area decussata. Born Mus. p. 91. 



Bonanni Rec. 2. f. 60, and Kirch, f. 58. Gualter, t. 72. 

 f. G. Knorr, vi. t. 14. f. 4. 

 Junior. Area marmorata. Chemnitz, vii. p. 228. t. 57. f. 

 563. Gmelin, p. 3314. 

 Area, No. 17. Schroeter End. iii. p. 286. 

 Bonanni Rec. 2. f. 61, and Kirch, f. 60. 

 Inhabits the coasts of Jamaica. Linnceus. Mediterranean. 

 D'Herbigny. West Indies. Chemnitz. Naples. Ulysses. 

 Common in the Adriatic, and on the shores of Italy. Bru- 

 guiere. 

 Shell from an inch and a half to two inches and a half long ; 

 and Chemnitz says that the length and breadth are equal, but 

 according to Bruguiere, the former rather exceeds the latter; 

 the colour is white, variegated with yellowish red spots, which 

 are generally formed into undulated transverse bands. Born 

 mistook this shell for the Linnaian A. decussata, and doubted 

 whether it is more than a Variety of A . pilosa, and Mon- 

 tagu considered it to be the young of that species ; see Test. 

 Brit. Supp. p. 55. Ulysses says, that the valves shut closer 

 than those of either A. glycymeris, or A. pilosa. 



glycymeris. 36. Shell ovate-sub-orbicular, in- 

 equilateral, gibbous, with obsolete decussated 

 strise ; umbones incurved, and the margin 

 crenated. 



Area glycymeris. Linnceus Syst. Nat p. 1143. Chemnitz, 

 vii. p. 229- t. 57. f. 564. Schroeter Eint. iii. p. 274. 

 Gmelin, p. 3313. Bruguiere Enc. Meth. p. 1 15 Ma- 

 ton and Racket, in Lin. Trans, viii. p. 93. t. 3. f. 3. 

 Lister Conch, t. 247. f. 82. Gualter, t. «2. f. C and D. 

 Knorr, vi. t. 14. f. 3.? Erie. Meth. t. 310. f. 3. 

 Inhabits the coasts of Guernsey. Lister. Red Sea. Fors/cael. 



VOL. J. B 



